Scanned images of tide gauge charts from Grand Harbour, Malta, 1871-1926

This dataset consists of high resolution tiff photographed images of tide gauge charts, from various historical tide gauges from the Grand Harbour (Port of Valletta), Malta. Due to the historical nature of these records, there is little associated metadata with the original charts. They come from various individual tide gauge locations around the Grand Harbour (Port of Valletta), Malta, and some are labelled with more specific locations, such as French Creek and Ricasoli Breakwater. General coordinates have been given for the geographic coverage: 14.49E to 14.53E, 35.87N to 35.9N. The earliest chart is from the 01/06/1871 and the latest is from 1926. There are gaps of several years in the dataset. In his 1878 paper, On the tides at Malta, G. B. Airy describes the gauge in operation in 1871: "The float was a copper vessel, nearly spherical, about 8 inches in diameter; a vertical rod attached to it passed freely through a guide, and was hinged to the end of a horizontal lever, of which the arms were so proportioned that each space marked on the tabular form between the horizontal lines [one-fourth of an inch. - G.B.A.] corresponded accurately to an inch rise or fall of the float." "The cylinder on which the paper was wrapped revolved once in 24 hours". It is not known how long this gauge was in operation for, but all of the tide gauges that produced the tide gauge charts in this dataset would have been float gauges. The original charts were collected by the Royal Navy as part of their surveying duties of the Grand Harbour. The United Kingdom Hydrographic Office (UKHO) had these charts in its archives, which were difficult to access and in need of conservation. The charts were conserved and photographed and made publically available as digital images to help preserve one of the longest and earliest temporal series of sea level data in the Mediterranean. The original data were collected by the Royal Navy and were placed in the archives of the Admiralty, now the UKHO. The conserved and photographed images were created by the United Kingdom Hydrographic Office Archives for the MALTESER, MediterrAnean Long TErm SEa level Rescue project and then deposited with the British Oceanographic Data Centre. This project was funded under the Central Government Breakthrough Fund, 2014. Reference: Airy, G. B. (1878). On the tides at Malta. Philosophical Transactions of the Royal Society of London, 169, 123-138.

Simple

Alternate title

British Oceanographic Data Centre record 1048Malteser
Date (Publication)
2018-05-18
Date (Creation)
2015-08-25
Date (Revision)
2018-02-09
Citation identifier
http://www.bodc.ac.uk/ / EDMED6282
Point of contact
Organisation name Individual name Electronic mail address Role

United Kingdom Hydrographic Office

Unknown

customerservices@ukho.gov.uk

Originator

British Oceanographic Data Centre

enquiries@bodc.ac.uk

Custodian
Maintenance and update frequency
As needed

MEDIN metadata record availability

Vertical Coverages

SeaDataNet PDV

INSPIRE themes
Use limitation

No conditions apply
Access constraints
Other restrictions
Other constraints

Data are freely available
Language
English
Topic category
  • Oceans
  • Climatology, meteorology, atmosphere
  • Elevation
N
S
E
W
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Begin date
1871-06-01
End date
1926-12-31
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
    Distributor contact
    Organisation name Individual name Electronic mail address Role

    British Oceanographic Data Centre

    enquiries@bodc.ac.uk

    		Distributor
    OnLine resource
    Protocol Linkage Name
    https://www.bodc.ac.uk/about/contact_us/contact_details/

    Enquiries contact details
    Hierarchy level
    Dataset
    Statement

    The original charts were collected by the Royal Navy as part of their surveying duties of the Grand Harbour, Malta. The conserved and photographed images were created by the United Kingdom Hydrographic Office (UKHO) Archives. The dataset was then ingested into the British Oceanographic Data Centre’s (BODC) National Oceanographic Database (NODB). BODC have not quality controlled (QC) the data within the images but have performed basic checks on the metadata associated with the images.

    Metadata

    File identifier
    4ec505924ede571a820e1c343b6ce004 XML
    Metadata language
    English
    Hierarchy level
    Dataset
    Date stamp
    2018-05-18T15:37:44
    Metadata standard name

    MEDIN Discovery Metadata Standard
    Metadata standard version

    Version 2.3.8
    Metadata author
    Organisation name Individual name Electronic mail address Role

    British Oceanographic Data Centre

    Polly Hadžiabdić

    enquiries@bodc.ac.uk

    		Point of contact
     
     

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    Keywords



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